Experimental study on shear strength and deterioration behavior of silty clay under dry-wet-freeze-thaw cycles
Abstract To investigate the influence of dry-wet, freeze-thaw, and their coupled cyclic effects on shear strength and deterioration behavior of silty clay, direct shear tests were performed on silty clay with different initial moisture content under the above cyclic conditions. A shear strength dete...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-05-01
|
| Series: | Scientific Reports |
| Subjects: | |
| Online Access: | https://doi.org/10.1038/s41598-025-02497-8 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850269025406287872 |
|---|---|
| author | Haotian Guo Yinglian Sun Chao Sun Hongyan Gu |
| author_facet | Haotian Guo Yinglian Sun Chao Sun Hongyan Gu |
| author_sort | Haotian Guo |
| collection | DOAJ |
| description | Abstract To investigate the influence of dry-wet, freeze-thaw, and their coupled cyclic effects on shear strength and deterioration behavior of silty clay, direct shear tests were performed on silty clay with different initial moisture content under the above cyclic conditions. A shear strength deterioration model of silty clay was established based on the indoor test data by using the Logistic function to predict shear strength parameters under dry-wet, freeze-thaw, and dry-wet-freeze-thaw cycles. Results are below. Under dry-wet, freeze-thaw, and their coupled cycles, shear stress-displacement curves can be classified into strain-softening and strain-hardening types. Increasing the moisture content, decreasing the vertical stress, and increasing the cycle times of the three cycles mentioned above all promote the transition of the curve from strain-hardening to strain-softening. As dry-wet, freeze-thaw, and their coupled cycles increase, the cohesion and internal friction angle deteriorate rapidly in the early stage and slowly in the later stage. The maximum degree of deterioration of shear strength parameters decreases as the moisture content increases during dry-wet cycles and dry-wet-freeze-thaw cycles, while it increases during freeze-thaw cycles, with the highest during dry-wet-freeze-thaw cycles. The research findings can predict and evaluate the shear performance of silty clay in seasonal frozen soil regions. |
| format | Article |
| id | doaj-art-cf2abae7bdc04142b1ae90d93535c4ca |
| institution | OA Journals |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-cf2abae7bdc04142b1ae90d93535c4ca2025-08-20T01:53:18ZengNature PortfolioScientific Reports2045-23222025-05-0115111710.1038/s41598-025-02497-8Experimental study on shear strength and deterioration behavior of silty clay under dry-wet-freeze-thaw cyclesHaotian Guo0Yinglian Sun1Chao Sun2Hongyan Gu3School of Geometrics and Prospecting Engineering, Jilin Jianzhu UniversitySchool of Geometrics and Prospecting Engineering, Jilin Jianzhu UniversitySchool of Geometrics and Prospecting Engineering, Jilin Jianzhu UniversitySchool of Geometrics and Prospecting Engineering, Jilin Jianzhu UniversityAbstract To investigate the influence of dry-wet, freeze-thaw, and their coupled cyclic effects on shear strength and deterioration behavior of silty clay, direct shear tests were performed on silty clay with different initial moisture content under the above cyclic conditions. A shear strength deterioration model of silty clay was established based on the indoor test data by using the Logistic function to predict shear strength parameters under dry-wet, freeze-thaw, and dry-wet-freeze-thaw cycles. Results are below. Under dry-wet, freeze-thaw, and their coupled cycles, shear stress-displacement curves can be classified into strain-softening and strain-hardening types. Increasing the moisture content, decreasing the vertical stress, and increasing the cycle times of the three cycles mentioned above all promote the transition of the curve from strain-hardening to strain-softening. As dry-wet, freeze-thaw, and their coupled cycles increase, the cohesion and internal friction angle deteriorate rapidly in the early stage and slowly in the later stage. The maximum degree of deterioration of shear strength parameters decreases as the moisture content increases during dry-wet cycles and dry-wet-freeze-thaw cycles, while it increases during freeze-thaw cycles, with the highest during dry-wet-freeze-thaw cycles. The research findings can predict and evaluate the shear performance of silty clay in seasonal frozen soil regions.https://doi.org/10.1038/s41598-025-02497-8Silty clayDry-wet-freeze-thaw cycleShear strengthLogistic deterioration modelDirect shear test |
| spellingShingle | Haotian Guo Yinglian Sun Chao Sun Hongyan Gu Experimental study on shear strength and deterioration behavior of silty clay under dry-wet-freeze-thaw cycles Scientific Reports Silty clay Dry-wet-freeze-thaw cycle Shear strength Logistic deterioration model Direct shear test |
| title | Experimental study on shear strength and deterioration behavior of silty clay under dry-wet-freeze-thaw cycles |
| title_full | Experimental study on shear strength and deterioration behavior of silty clay under dry-wet-freeze-thaw cycles |
| title_fullStr | Experimental study on shear strength and deterioration behavior of silty clay under dry-wet-freeze-thaw cycles |
| title_full_unstemmed | Experimental study on shear strength and deterioration behavior of silty clay under dry-wet-freeze-thaw cycles |
| title_short | Experimental study on shear strength and deterioration behavior of silty clay under dry-wet-freeze-thaw cycles |
| title_sort | experimental study on shear strength and deterioration behavior of silty clay under dry wet freeze thaw cycles |
| topic | Silty clay Dry-wet-freeze-thaw cycle Shear strength Logistic deterioration model Direct shear test |
| url | https://doi.org/10.1038/s41598-025-02497-8 |
| work_keys_str_mv | AT haotianguo experimentalstudyonshearstrengthanddeteriorationbehaviorofsiltyclayunderdrywetfreezethawcycles AT yingliansun experimentalstudyonshearstrengthanddeteriorationbehaviorofsiltyclayunderdrywetfreezethawcycles AT chaosun experimentalstudyonshearstrengthanddeteriorationbehaviorofsiltyclayunderdrywetfreezethawcycles AT hongyangu experimentalstudyonshearstrengthanddeteriorationbehaviorofsiltyclayunderdrywetfreezethawcycles |